A gene involved in vitamin D metabolism could become an important target for future research into cancer and other diseases, after scientists found that disrupting the gene dramatically affected the survival and molecular activity of colorectal cancer cells.
The gene, known as SDR42E1, appears to play a role in vitamin D regulation and the metabolism of related steroid molecules. Researchers say their findings could eventually contribute to precision-medicine approaches, although the work is still at an early experimental stage.
The study was published in Frontiers in Endocrinology in July 2025 by researchers from Hamad Bin Khalifa University in Qatar and Middle East University in Jordan.
The research used laboratory-grown human colorectal cancer cells rather than patients or animals, meaning the findings do not yet demonstrate that targeting SDR42E1 can treat cancer in people.
Why SDR42E1 Matters
Vitamin D is widely associated with bone health, but its biological role extends beyond calcium regulation. Its active hormonal form, calcitriol, is involved in processes affecting cell growth, metabolism, muscles, nerve cells and immune activity.
Scientists have long known that vitamin D levels can be influenced by genetics, diet, sunlight exposure and the body’s ability to absorb and metabolize the vitamin.
SDR42E1 became particularly interesting because previous genetic research had identified a mutation in the gene associated with vitamin D deficiency. The mutation produces a shortened version of the SDR42E1 protein that is unable to function normally.
The researchers wanted to understand what happens when the gene is deliberately disrupted in cells.
Using CRISPR to Switch Off the Gene
The team used CRISPR/Cas9 gene-editing technology to introduce the same loss-of-function mutation into HCT116 cells, a commonly studied human colorectal cancer cell line.
The researchers created a model carrying a nonsense mutation known as p.Q30, which prevents the normal SDR42E1 protein from being produced. They then compared the genetically altered cells with cells carrying the functional version of the gene.
The results showed that removing functional SDR42E1 had substantial consequences for the cancer cells.
The research team reported that thousands of genes changed their activity after the mutation was introduced. RNA sequencing identified 4,663 differentially expressed genes out of the genes analyzed, indicating that SDR42E1 is connected to a much broader network of cellular processes than vitamin D metabolism alone.
The researchers also found that the altered cells had markedly reduced viability compared with the control cells.
These observations led the scientists to propose that SDR42E1 may function as an important molecular regulator in cancer cells.
A Possible Cancer Research Target
One of the most significant implications of the study is the possibility that SDR42E1 could eventually become a target for precision oncology.
The researchers observed changes in pathways associated with cancer signaling, immune responses, cholesterol metabolism and cellular stress after altering SDR42E1 activity.
That does not mean that blocking the gene is currently a cancer treatment. Instead, the findings provide a biological clue that researchers can investigate further.
If future studies confirm that certain cancer cells depend more heavily on SDR42E1 than surrounding healthy cells, researchers could explore whether drugs or other therapies designed to interfere with the gene or its protein might selectively affect tumors.
Such an approach would fit within the broader concept of precision medicine, where treatment is designed around specific molecular characteristics of a disease rather than relying exclusively on therapies that affect many types of cells.
The researchers themselves stressed that considerable validation and long-term development would be necessary before such an idea could move toward clinical use.
The Vitamin D Connection
The study also raises questions that go beyond cancer.
The researchers found evidence connecting SDR42E1 with vitamin D regulation and sterol metabolism. Their experiments included both loss of the gene’s function and increased expression of the gene, allowing them to examine how different levels of SDR42E1 influenced cellular pathways.
The overexpression experiments produced changes in more than 1,400 genes and affected pathways involving immune signaling, cholesterol metabolism, cellular aging and other biological processes.
The team also compared its findings with genetic information associated with vitamin D and identified overlap involving several genes linked to vitamin D-related biology.
Together, the findings suggest that SDR42E1 may occupy a position at the intersection of vitamin D, sterol metabolism and broader cellular regulation.
Could It Help Other Diseases?
The researchers believe SDR42E1 could eventually be investigated in conditions beyond cancer.
Because vitamin D and its active hormonal pathways are involved in immune and metabolic processes, changes in SDR42E1 activity could potentially be relevant to diseases in which vitamin D signaling plays a role.
However, this possibility remains theoretical.
The researchers specifically cautioned that the long-term effects of manipulating SDR42E1 on vitamin D balance are not yet fully understood. Increasing or decreasing activity of a gene involved in a fundamental metabolic pathway could have effects elsewhere in the body.
That makes further research particularly important before any attempt is made to translate the findings into a human therapy.
From Laboratory Finding to Medical Treatment
The study represents an early step rather than a finished medical breakthrough.
Its experiments were conducted in cultured colorectal cancer cells, and the gene was manipulated using laboratory gene-editing techniques. The research therefore establishes a potential biological mechanism that needs to be tested in increasingly complex models.
Researchers would need to determine whether the same effects occur in other cancer types, whether healthy human tissues can tolerate manipulation of SDR42E1 and whether the gene can be safely targeted without disrupting normal vitamin D metabolism.
Those questions will be critical if SDR42E1 is ever to move from a laboratory research target toward a therapeutic strategy.
For now, the discovery adds another piece to scientists’ understanding of how vitamin D metabolism intersects with cellular health. It also illustrates how studying genes associated with nutritional deficiencies can reveal biological pathways that may have relevance far beyond nutrition.
SDR42E1 is not yet a treatment but its role in vitamin D regulation and cancer-cell biology gives researchers a new molecular pathway to investigate.
Jaweria Nazeer
About Author:
The author is a writer who focuses on social issues and nutrition. Their work highlights topics such as inequality, education, human rights and healthy lifestyle habits aiming to inform readers and promote positive awareness and change.
Keywords: SDR42E1, vitamin D gene, vitamin D metabolism, cancer research, cancer treatment research, precision medicine, colorectal cancer, CRISPR gene editing, autoimmune disease, vitamin D deficiency
Asian Burg / Health | Science
