Increased PHGDH expression promotes aberrant melanin accumulation
Abstract Background Copy number gain of the D-3-phosphoglycerate dehydrogenase (PHGDH) gene, which encodes the first enzyme in serine biosynthesis, is found in some human cancers including a subset of melanomas. Methods In order to study the effect of increased PHGDH expression in tissues in vivo, w...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2019-07-01
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| Series: | BMC Cancer |
| Online Access: | http://link.springer.com/article/10.1186/s12885-019-5933-5 |
| _version_ | 1819049193089531904 |
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| author | Katherine R. Mattaini Mark R. Sullivan Allison N. Lau Brian P. Fiske Roderick T. Bronson Matthew G. Vander Heiden |
| author_facet | Katherine R. Mattaini Mark R. Sullivan Allison N. Lau Brian P. Fiske Roderick T. Bronson Matthew G. Vander Heiden |
| author_sort | Katherine R. Mattaini |
| collection | DOAJ |
| description | Abstract Background Copy number gain of the D-3-phosphoglycerate dehydrogenase (PHGDH) gene, which encodes the first enzyme in serine biosynthesis, is found in some human cancers including a subset of melanomas. Methods In order to study the effect of increased PHGDH expression in tissues in vivo, we generated mice harboring a PHGDH tetO allele that allows tissue-specific, doxycycline-inducible PHGDH expression, and we analyzed the phenotype of mice with a ubiquitous increase in PHGDH expression. Results Tissues and cells derived from PHGDH tetO mice exhibit increased serine biosynthesis. Histological examination of skin tissue from PHGDH tetO mice reveals the presence of melanin granules in early anagen hair follicles, despite the fact that melanin synthesis is closely coupled to the hair follicle cycle and does not normally begin until later in the cycle. This phenotype occurs in the absence of any global change in hair follicle cycle timing. The aberrant presence of melanin early in the hair follicle cycle following PHGDH expression is also accompanied by increased melanocyte abundance in early anagen skin. Conclusions These data suggest increased PHGDH expression impacts normal melanocyte biology, but PHGDH expression alone is not sufficient to cause cancer. |
| first_indexed | 2024-12-21T11:28:15Z |
| format | Article |
| id | doaj.art-3c3135e5d5674410bb51cf7b8aa97abe |
| institution | Directory Open Access Journal |
| issn | 1471-2407 |
| language | English |
| last_indexed | 2024-12-21T11:28:15Z |
| publishDate | 2019-07-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Cancer |
| spelling | doaj.art-3c3135e5d5674410bb51cf7b8aa97abe2022-12-21T19:05:37ZengBMCBMC Cancer1471-24072019-07-0119111110.1186/s12885-019-5933-5Increased PHGDH expression promotes aberrant melanin accumulationKatherine R. Mattaini0Mark R. Sullivan1Allison N. Lau2Brian P. Fiske3Roderick T. Bronson4Matthew G. Vander Heiden5Koch Institute for Integrative Cancer ResearchKoch Institute for Integrative Cancer ResearchKoch Institute for Integrative Cancer ResearchKoch Institute for Integrative Cancer ResearchRodent Histopathology Core, Harvard Medical School, BostonKoch Institute for Integrative Cancer ResearchAbstract Background Copy number gain of the D-3-phosphoglycerate dehydrogenase (PHGDH) gene, which encodes the first enzyme in serine biosynthesis, is found in some human cancers including a subset of melanomas. Methods In order to study the effect of increased PHGDH expression in tissues in vivo, we generated mice harboring a PHGDH tetO allele that allows tissue-specific, doxycycline-inducible PHGDH expression, and we analyzed the phenotype of mice with a ubiquitous increase in PHGDH expression. Results Tissues and cells derived from PHGDH tetO mice exhibit increased serine biosynthesis. Histological examination of skin tissue from PHGDH tetO mice reveals the presence of melanin granules in early anagen hair follicles, despite the fact that melanin synthesis is closely coupled to the hair follicle cycle and does not normally begin until later in the cycle. This phenotype occurs in the absence of any global change in hair follicle cycle timing. The aberrant presence of melanin early in the hair follicle cycle following PHGDH expression is also accompanied by increased melanocyte abundance in early anagen skin. Conclusions These data suggest increased PHGDH expression impacts normal melanocyte biology, but PHGDH expression alone is not sufficient to cause cancer.http://link.springer.com/article/10.1186/s12885-019-5933-5 |
| spellingShingle | Katherine R. Mattaini Mark R. Sullivan Allison N. Lau Brian P. Fiske Roderick T. Bronson Matthew G. Vander Heiden Increased PHGDH expression promotes aberrant melanin accumulation BMC Cancer |
| title | Increased PHGDH expression promotes aberrant melanin accumulation |
| title_full | Increased PHGDH expression promotes aberrant melanin accumulation |
| title_fullStr | Increased PHGDH expression promotes aberrant melanin accumulation |
| title_full_unstemmed | Increased PHGDH expression promotes aberrant melanin accumulation |
| title_short | Increased PHGDH expression promotes aberrant melanin accumulation |
| title_sort | increased phgdh expression promotes aberrant melanin accumulation |
| url | http://link.springer.com/article/10.1186/s12885-019-5933-5 |
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