The present disclosure provides compositions for regulating glucose metabolism. The compositions provide for reduced levels of p75.sup.NTR and/or reduced binding of p75.sup.NTR to a GTPase such as Rab31 or Rab5. The compositions are useful in methods of regulating glucose metabolism, which methods are also provided.

The present invention discloses and claims novel pharmaceutical compositions, methods, and kits used for the contemporaneous, heterogeneously-oriented, multi-targeted therapeutic modification and/or modulation of cellular metabolic anomalies or other undesirable physiological conditions, including cancer, where the normal cellular biochemical function and/or the expression levels of various proteins/enzymes (i.e., the target molecules) are abnormal and must be modified and/or modulated in order to treat these metabolic anomalies or other undesirable physiological conditions, including cancer. The aforementioned target molecules, by way of non-limiting example, include: anaplastic lymphoma kinase (ALK), mesenchymal epithelial transition (MET) kinase, the receptor tyrosine kinase (ROS1), epidermal growth factor receptor (EGFR), peroxiredoxin (Prx), excision repair cross-complementing protein 1 (ERCC1), insulin growth factor 1 receptor (IGF1R), ribonucleotide reductase (RNR), tubulin, farnesyltransferase, and various other classes of proteins/enzymes. Additionally, the present invention discloses and claims methods and kits for (a) the selection of subjects for treatment; (b) the determination of the most effective medicinal agent(s) to be administered in combination with the administration of the sulfur-containing, amino acid-specific small molecules of the present invention; (c) the dosage of the medicinal agent(s) to be administered; (d) the determination of the length and/or number of treatment cycles; (e) the adjustment of the specific medicinal agent(s) used and the dosage administered during treatment; and/or (f) ascertaining the potential treatment responsiveness of the specific disease to the medicinal agents (s) selected for administration to a subject suffering from one or more types of: (i) cancer or (ii) metabolic anomalies or other undesirable physiological conditions by quantitatively determining the level of the abnormal biochemical activity and/or abnormal expression of any combination of the aforementioned target molecules; by use of quantitative measurement methodologies including, but not limited to: fluorescence in situ hybridization (FISH), nucleic acid microarray analysis, immunohistochemistry (IHC), radioimmunoassay (RIA), quantitative immunofluorescence and/or automated quantitative analysis; ELISA and flow cytometry-based analyses; PCR coupled with MS approaches; mass spectroscopy-based methods; and X-ray crystallography, and other related analytic methodologies.

Provided herein are methods for diagnosing and treating Alzheimer's disease in a subject comprising determining the expression level of three, four or five members of a panel of proteins in a biological sample obtained from the subject.