Abstract: A drug carrier nanoparticle has been synthesized that can specifically target the proximal tubules of the kidneys. The nanoparticles accumulate in the kidneys to a greater extent than other organs (e.g., up to 3 or more times greater in the kidney than any other organ). They can encapsulate many classes of drug molecules. The nanoparticles are biodegradable and release the drug as they degrade. The particles can sustainably release a drug within the kidneys for up to two months. The nanoparticles are useful for the treatment of diseases that affect the proximal tubules, such as heart failure, liver cirrhosis, hypertension, and renal failure; the study of relative blood flow to the renal cortex and medulla; and delivery of agents to treat gout.

Abstract: A computing system receives location data from a computing device of a transport provider and based on the location data, monitors a location of the transport provider as the transport provider operates a vehicle to travel towards a service location of the service request. The system determines, based on monitoring the location of the transport provider, that the transport provider has not indicated at least one of a correct start location or a correct start time for fulfilling the service request. In response to determining that the transport provider has not indicated the at least one of the correct start location or the correct start time, the system uses a set of the location data received from the computing device of the transport provider to determine the at least one of the correct start location or the correct start time for fulfilling the service request.

Abstract: A method of detecting a condition in a subject comprises the steps of contacting cells of the subject with single-walled carbon nanotubes (SWCNTs), monitoring photoluminescence emitted by SWCNTs internalized into the cells and generating an SW-CNT emission profile, comparing the SWCNT emission profile to a control emission profile for the SWCNTs to produce a result, and determining a likelihood of having the condition in the subject based on the result from the comparing step. Also disclosed is a method for screening agents capable of changing endocytic environment using SWCNTs.

Abstract: The present technology is directed to methods useful in treating cancer, slowing growth of a tumor, reversing growth of a tumor, slowing growth of a neoplasm, reversing growth of a neoplasm, slowing proliferation of a neoplasm, and/or reversing proliferation of a neoplasm, for cancers, tumors, and neoplasms harboring a constitutively active variant of one or both of KRAS or HRAS, where the constitutively active variant is a gain of function mutation, a duplication, or a gene amplification.

Abstract: A composition can include a complex, where the complex includes a photoluminescent nanostructure and a polymer free from selective binding to an analyte, the polymer adsorbed on the photoluminescent nanostructure, and a selective binding site associated with the complex.

Abstract: Described herein are compositions useful for the detection of analytes. In certain embodiments, the invention relates among other things to DNA-encapsulated single-walled carbon nanotubes (SWCNTs) functionalized with an antibody or other analyte-binding species, for detection and/or imaging of an analyte in a biological sample or subject. Other embodiments described herein include systems, methods, and devices utilizing such compositions for ex vivo biomarker quantification, tissue optical probes, and in vivo analyte detection and quantification. In one aspect the invention relates to a single-walled carbon nanotube (SWCNT) sensor, comprising a SWCNT; a polymer associated with the SWCNT; and an analyte-binding species. Detection of one or more analytes is achieved by measuring changes in fluorescence intensity, shifts in fluorescence wavelength, and/or other characteristics in the spectral characteristics of the described compositions.

Abstract: A computing system receives location data from a computing device of a transport provider and based on the location data, monitors a location of the transport provider as the transport provider operates a vehicle to travel towards a service location of the service request. The system determines, based on monitoring the location of the transport provider, that the transport provider has not indicated at least one of a correct start location or a correct start time for fulfilling the service request. In response to determining that the transport provider has not indicated the at least one of the correct start location or the correct start time, the system uses a set of the location data received from the computing device of the transport provider to determine the at least one of the correct start location or the correct start time for fulfilling the service request.

Abstract: Described herein are novel devices and methods for the optical detection of oligonucleotide binding events for diagnostic, point-of-care, drug screening, and theranostic applications, for example, a robust and customizable system to detect specific DNA and RNA oligonucleotides using a carbon nanotube optical signal.

Abstract: Disclosed herein are methods and compositions for detection of target polynucleotides in a mixed sample by amplification of the target polynucleotide and detection in a nanopore device.

Abstract: Described herein are suspensions of helical polycarbodiimide polymers that ‘cloak’ nanotubes, thereby effecting control over nanotube emission, providing a new mechanism of environmental responsivity, and enabling precise control over sub-cellular localization. The helical polycarbodiimide polymers described herein are water soluble, easily modifiable, and have unique architectures that facilitate their application in radiopharmaceutical delivery and imaging methods, in therapeutics and therapeutic delivery methods, and their use as sensors—both in conjunction with carbon nanotubes, and without nanotubes.

Abstract: A computer system can communicate with a mobile device of a service provider to receive location data. Additionally, the computer system can monitor, from the location data, a location of the mobile device over a duration that follows the service provider being assigned to a service request. Based on monitoring the location data, the computer system can determine whether the service provider has failed to correctly indicate when a transport service for the service request began. Moreover, the computer system can cause a service application running on the mobile device to prompt the service provider to enter input to identify a start location where the transport service began, in response to the computer system determining that the service provider has not correctly indicated when the transport service begun.

Abstract: Described herein are nanoparticles which are largely made of (e.g., 90 wt. %) hydrophobic drugs and are stabilized by water soluble dyes. The nanoparticles can range in size from 30 nm to 150 nm and have highly negative surface charge (e.g., ?55 mV). These nanoparticles are highly soluble in water, stable for days in PBS buffer and can be easily lyophilzed and reconstituted in water. Using quantitative self-assembly prediction calculations, topochemical molecular descriptors were identified and validated as highly predictive indicators of nano-assembly, nanoparticle size, and drug loading. The resulting nanoparticles selectively targeted kinase inhibitors to caveolin-1expressing human colon cancer and autochthonous liver cancer models to yield striking therapeutic effects while avoiding pERK inhibition in healthy skin. The nanoparticles exhibited remarkable anti-tumor efficacy in vitro and in vivo in models of hepatocellular carcinoma.

Abstract: A drug carrier nanoparticle has been synthesized that can specifically target the proximal tubules of the kidneys. The nanoparticles accumulate in the kidneys to a greater extent than other organs (e.g., up to 3 or more times greater in the kidney than any other organ). They can encapsulate many classes of drug molecules. The nanoparticles are biodegradable and release the drug as they degrade. The particles can sustainably release a drug within the kidneys for up to two months. The nanoparticles are useful for the treatment of diseases that affect the proximal tubules, such as heart failure, liver cirrhosis, hypertension, and renal failure; the study of relative blood flow to the renal cortex and medulla; and delivery of agents to treat gout.

Abstract: A computer system can communicate with a mobile device of a service provider to receive location data. Additionally, the computer system can monitor, from the location data, a location of the mobile device over a duration that follows the service provider being assigned to a service request. Based on monitoring the location data, the computer system can determine whether the service provider has failed to correctly indicate when a transport service for the service request began. Moreover, the computer system can cause a service application running on the mobile device to prompt the service provider to enter input to identify a start location where the transport service began, in response to the computer system determining that the service provider has not correctly indicated when the transport service begun.

Abstract: A method of detecting a condition in a subject comprises the steps of contacting cells of the subject with single-walled carbon nanotubes (SWCNTs), monitoring photoluminescence emitted by SWCNTs internalized into the cells and generating an SWCNT emission profile, comparing the SWCNT emission profile to a control emission profile for the SWCNTs to produce a result, and determining a likelihood of having the condition in the subject based on the result from the comparing step. Also disclosed is a method for screening agents capable of changing endocytic environment using SWCNTs.

Abstract: Described herein are suspensions of helical polycarbodiimide polymers that ‘cloak’ nanotubes, thereby effecting control over nanotube emission, providing a new mechanism of environmental responsivity, and enabling precise control over sub-cellular localization. The helical polycarbodiimide polymers described herein are water soluble, easily modifiable, and have unique architectures that facilitate their application in radiopharmaceutical delivery and imaging methods, in therapeutics and therapeutic delivery methods, and their use as sensors—both in conjunction with carbon nanotubes, and without nanotubes.

Abstract: A system for programmatically determining location information in connection with a transport service is disclosed. A driver can operate a driver device and can be assigned to provide a transport service for a user. Based on the current location of the driver device with respect to the pickup location for the user, and based on when the driver provides input indicating that the transport service has begun, the system can identify a previous location of the driver device as a start location of the transport service.

Abstract: Described herein are polymeric drug-carrying nanogels that are capable of targeting to P-selectin for the treatment of cancer and other diseases and conditions associated with P-selectin. Furthermore, in certain embodiments, the nanogels presented here offer a drug release mechanism based on acidic pH in the microenvironment of a tumor, thereby providing improved treatment targeting capability and allowing use of lower drug doses, thereby reducing toxicity.

Abstract: A method of detecting a condition in a subject comprises the steps of contacting cells of the subject with single-walled carbon nanotubes (SWCNTs), monitoring photoluminescence emitted by SWCNTs internalized into the cells and generating an SWCNT emission profile, comparing the SWCNT emission profile to a control emission profile for the SWCNTs to produce a result, and determining a likelihood of having the condition in the subject based on the result from the comparing step. Also disclosed is a method for screening agents capable of changing endocytic environment using SWCNTs.

Abstract: Systems and methods related to optical nanosensors comprising photoluminescent nanostructures are generally described.